Iker Casillas: 19 years since the Saint made his Real Madrid debut

His debut would come two years later in 1999 against Olympiacos, with the game ending 3-3.

Casillas and Roberto Carlos during the 3-3 draw with Olympiacos.

On May 24, 2000, Casillas won his first Champions League when Madrid beat Valencia 3-0 in Paris.

Casillas and his Madrid teammates with the trophy in Paris.

Two years later, on May 15, Casillas would add his second Champions League title when Madrid defeated Bayer Leverkusen 2-1 in Glasgow.

Casillas celebrating the 2002 Champions League triumph with Zinedine Zidane.

Casillas is mobbed by supporters on his return to Madrid after the Leverkusen game.

Celebrating the Champions League win at Cibeles.

Casillas would go on to make 152 appearances for Madrid in the Champios League.

Oliver Kahn and Casillas indulge in a spot of handbags during a 2007 Champions League game. Bayern won 2-1.

Iker Casillas and Raúl.

Casillas soon gained a reputation for making spectacular saves at Real Madrid, earning the nickname "El Santo" (the Saint).

Casillas making a save.

Casillas was sometimes criticised for lacking presence in the area but often proved extremely agile under high balls.

He was also an excellent shot-stopper on the deck during his time at the Bernabéu.

Casillas completed his hat-trick of Champions League triumphs on May 24, 2014 after Real defeated Atlético in the final.

Adding to his 152 games for Madrid in the Champions League, Casillas has played 18 times for Porto in Europe's elite club competition, taking his tally to 170. No player in history has made more appearances.

Casillas celebrating a Porto win in the Champions League.